Radiator.



'. TUBI).

RDIATE. APPLIOATIQN ULEB DU. 11, 1909.

mmm@ Aug. 9, `1910.

2 HBETSf-SEBET 1.

P. TODD.

' RADIATOR.

APPLICATION Hum DB0.11, 1909.

Patented Aug. 9, 1910.

2 SHEETS- SHEET 2.

v@UNITED sTATEs PATENT OEEICE.

'raamt Tomi, or cnrcaao, rumors, assrcnon 'ro Josera n. Lone, or cnroaco, ILLINOIS.

RADIATOR.

Speclcation ci Letters Patent.

Patented Aug. 9, 1910.

Application led December 11, 1909. Serial No. 532,553.

To all-wlwm 'it may concern.'

Beit known that I, Finiti; Tono, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful 11nprovements in Radiators, of which the following is a specifica-tion.

The present inventlon relates to that class of so called radiators that are adapted more especially for use on automobiles but 1t 1s manifest that the invention is appllcable to any and all apparatuses in which the clrculating medium passing-through 1t 1s to be cooled, or to give up its heat to the surrounding atmosphere, such an apparatus being properly termed a radiator, or 1n whlch the circulating medium 1s to absorb heat from the surrolmding atmosphere, suchen apparatus ,being properly termed a cooler or refrigerator.

The primary object of the invention being -to provide an efcient radiator for automobiles, the following description will, for the sake of brevity, be confined to such a radiator, with the understanding, however, that .I reserve to mysel the exclusive right to use the several novel features of the invention in any apparatus for any speoic purpose for which the may be adapted.

Desiderate. in all ra iators for automoblles include low cost of manufacture, lightness combined with adequate strength and durability, eiiiciency in radiating capacity combined with compactness, and ornateness, and the attainment of all of these in a singlle radiator, in as high a degree as practica le, is aimed at by the present invention.

The invention consists in the features of novelty that are hereinafter described with reference to the accompanying drawings, which are made a part of this specication, and in which:

Figure 1 is a front elevation on a small scale of a radiator embodying the invention, conventionalized. Fig. 2 is a front elevation of a section or fragment of a radiator embodying the invention on an enlarged scae. Fig. 3 is o vertical transverse section thereof or, in other words, in a vertical plane extending from side to side of the radiator, on the line 3-3, Figs. 4 and 5. Fig. 4 is a vertical longitudinal section thereof on the line ir-4, F1 s. 3 and 5. Fig. 5 is a horizontal section t ereof on the odset line :T- 5, Figs. 3 and. 4.

In all of the several figures of the drawings, exce t Fi 1, the sheet metal of which the so cal ed c annel strips and the water tubes are made is exaggerated in thickness.

The radiator has headers, A and B, into the former of which the water to be cooled, as it comes from the water jacket of the engine, is received While from the latter' the water is returned to the Water jacket after having passed through the tubes C, connecting the tivo headers. As shown in the draw'- ings the headers are located one above the other and the water tubes are vertical, but this particular arrangement of the parts is not essential.

According to the present invention, the water tubes pass uninterruptedly from the upper to the lower header and this has the advantage of avoiding any obstruct-ions or irregularitiesv within the tubes which would be incident to forming the tubes in a. plurality of longitudinal sections arranged end to end. Each of the tubes in its lateral dimensions, preferably extends from the front to back of the radiator and has dat sides. The several tubes are arranged parallel with each other and spaced apart at such distances as will leave between them passages extending from front to back of the radiator through which the air may freely pass as the machine progresses. In each of these passages is arranged a so called channel strip, D, which extends continuously from the one header to the other. Each of these so called channel ,strips consists of an integral strip of sheet metal bent rectangular-1y in such directions as to form a. continuous series of rectangular channels, E, which open in opposite directions, or, in other words, have their open sides presented at opposite sides o1' faces of the strip.

The front ends of the Walls, F, which form the sides of the channels, are flush with the front sides or edges of the tubes and are common to adjacent channels, While the bottom walls, G, of the channels Contact with the sides of adjacent tubes. These bottom Walls are provided with openings or )erforations, H, one object of which is to reduce weight, While another object is to facilitate the passage of heat. from the walls of the water tubes directly into the horizontal air passages, and in order that these perforations sha-ll not seriously impair the strength of the radiating strip they are located wholly between the bends of the stri which result in the channels, leaving said ends or angular portions of thc strip intact. The outer ends of the bottoms G, of the channels are cut away or notched as shown at I so that they are not noticeableHin fact they are hardly visible-from the front of the radiator and these notches or cut away portions are provided principally for the sake of appearance in the completcdradlator.

Looking at Fi 3, it will be seen that at the open sides o the channels there 1s but one thickness of metal intervening between the water in the tubes and the air passages, namely the side wall of the tube, while at the bottoms of the channels, there is a double thickness, excepting Where the pertorations occur. If this double thickness were continued quite to the front sides or edgdes of the tubes, the :tace of the radiator woul present an irregular appearance, while, on the other hand, as a result of the cutting away of the ends of the bottoms of the channels, the face of the radiator presents a symmetrical-appearance made up of rectangular openings arranged in both horizontal and vertical alinement and having similarly alined boundaries of uniform thickness. That is to say, the front edges of the tubes, all of which are of equal thiclmess, form the vertical boundaries of the rectangular openings, while the side walls of the channels, all of which are of equal thickness form the hori zontal boundaries of the rectangular openings, the tubes, however, being of greater thickness than the side walls of the channels.

The channel strips perform several functions. They serve to space apart and to brace against each other, to a greater or less extent, the intermediate portions of the tubes, and their side walls provide extended radiating surfaces for transmitting the heat from the walls of the tubes and radiating it into the air passages. When continuous tubes, extending uninterruptedly from one header to the other and therefore of considq erable length, are used it is desirable to ad ditionally brace the tubes a ainst each other, laterally, as much as possi le without ma terially reducing the aggregate area and capacity of the air passages and at the same time brace and strengthen the strips themselves, which are equal in length to the length of the tubes, as against forces acting vertically and tending to collapse or distort the channels. To this end a limited number of braces acting both horizontally and verticalltY are arranged in an equal number of the channels so that cach brace completely llls the end of thc channel in which it is arranged and the several braces are arranged in horizontally alined channels. In that form of the invention, which is the subject matter of the present application, each of these braces consists of a ody of solder, J,

which completely fills the end of thc channel and, as shown more clearly in Figs, 1 and 2, these braces occup aline channels extending from side to side ot' the radiator at any desired intervals from the top to the bottom thereof. These braces being flush with the front edges of the tubes and of greater width than the tubes have the eli'ect of giving the front face of the radiator the appearance of a plurality of horizontal panels and this is an appearance which is very popular with and much sought by the users of automobiles of the present day. This panel e'ect is still further enhanced by making the horizontal dividing lines narrower than the depth of the air passages and to this end the channels in which the braces are arranged are narrower than the open chan nels, as shown at K. In the process of manufacture this difference in the width of the channels may be produced in any desired manner but it is preferably produced by the use of forming dies which form a longitudinal crimp or corrugation in the bottom of each channel as shown at L, the advantage of these crimps or corrugations being that they tend to increase the rigidity of the channel strip as a whole, While at the same time they do not mar or detract from the appearance of the radiator because they are concealed, whereas, if the bottoms of the open channels were similarly crimped, the crirnps would be visible at the iront of the radiator and destroy the right-line effect which is desired.

It will be understood that when all of the parts are assembled the front face of the radiator is immersed in a bath of molten solder whereby all of the joints are completely closed and sealed water tight.

VVha-t I claim as new and desire to secure by Letters Patent is:

1. A radiator having, in combination, two headers, a. series of flat, parallel, continuous tubes extending uninterruptedly from one header to the other, said tubes being spaced apart leaving air passages between them, integral spacin bracing and radiating strips bent so as to orma continuous series of rectangular channels opening alternately in oppcsite directions arranged in said passages with their channels in horizontal allnement, the bottoms of the channels of each strip being in contact with the sides of adjacent tubes and being cut away at their forward ends, while their sides terminate at their forward ends flush with the front sides of the tubes, and braces arranged in horizontally alined channels at infrequent intervals from top to bottom of the radiator. y

2. A radiator having, in combination, two headers, a series of dat, parallel continuous tubes extending uninterru tedly from one header to the other, said tu s being spaced apart, leaving air passages between them,

wenn a integral spacing, bracing and radiating tubes, and braces arranged in horizontally strips, bent so as. to form a continuous series nlmecl channels at infrequent intervals from of rectangular channels openmg alternately top to bottom of the radiator, the bottoms in opposite directions arten ed in said esof the channels being crimped longitudi- 5 sages tvlitll; their chmhxglshin o'izcntalhe tinenelly.

ment,t e ottomso t c anne so eac 'stip being in contact with the sides of adjacent FRANK TODD tubes and bein eut away at their forward Witnesses:

ends, while their sides terminate et their for- J osEPH B. LONG, l0 Werd ends flush with the other sides of the L. M. HOPKINS. 

